Apparatus for making composite gear rims



Jan. 14, 1936. E M D AUBlGNE 2,028,048

APPARATUS FOR MAKING COMPOSITE GEAR RIMS original Filed Nov. 19, 1952 2 sheets-sheet 1 Z3-w e 71,551-

Jan. 14, 1936. E. M. DAUBIGNE I APPARATUS FOR MAKING CMPOSITE GEAR RIMS 2 Sheets-Sheet .2

Original Filed Nov. 19, 1932 Iasi-Inail. 3.1 agi Patented Jan. I14, 1936Y [UNITED STATES APPARATUS FOR MAKING COMPOSITE GEAR RIMS Emile Merle dAubigne, Neuilly-sur-Seine, France,

assignor to Continental-Diamond Fibre Company, Newark, Del., a corporation of Delaware Original application November 19, 1932, Serial No. 643,519. Divided and this application July 17, 1934, `Serial No. 735,656. In France November 24, 1931 11 Claims.

This invention relates to apparatus for making nonmetallic rims for gears and like articles. The present application is a division of my copending application Serial No. 643,519, filed November 19, 1932, which has matured into Y Patent No. 1,981,782, granted November 20, 1934.

The principal object" of this invention is to provide novel apparatus for making an improved non-metallic gear rim having maximum strength and resistance to Wear. More specifically, the invention is directed to helical gears-although it is applicable to gearsin general and to other devices such as rollers, pulleys, etc.

AnotherA object of the invention is to provide novel apparatus for practicing the improved method and for forming the workingV body or'rim of the improved gear disclosed and claimed in my said .co-pending application.

Other objects of the invention will be apparent hereinafter. A full andV clear understanding of the invention, as exemplified by diagrammatic and practical forms, mayY be had from the following detailed description taken together with the accompanying drawings.

In the drawings:

Figure 1 is a perspective view illustrating the improved helical gear construction which may be formed by the apparatus `of the present invention;

Figure 2 is a diagrammatic illustration cf apparatus for forming the rim of the improved gear or similar objects; and

Figure 3 is a side elevational view of a practical machine for forming the Working body or rim of the improved gear or like articles.

synthetic resin of the phenolic type is used, asV

described in my said co-pending application. It is unnecessary' here to describe in detail the l structure of theimproved article and the method of making the same, since thesedo not f orm a part of the present invention and reference may be had to the co-pending application for a Vfull description of the article and method.

For the present purpose, it suffices` to` state that the helical gear illustrated in Figure 1 is formed of annularly Vdisposed `laminations I which are recumbent or angularly inclined, as

through feed rolls 4.

direction of the laminations. By thus designing the gear, the flanks or working surfaces of the gear teeth are substantially at right angles to the laminations and this construction gives maximum strength and durability.

In Figure 2,there is illustrated diagrammatically apparatus for forming the gear working body or any similar object which may be advantageously constructed of laminated material. A roll of binder-treated brous sheet material is shown at 3 and the strip of material passes A pair of forming or bending gears 5 serve to'fold the strip material in the desired fashion to form successive laminar tions and these laminations are passed through a guide 6 which extends tangentially from an annular receptacle 1. The teethI of gears 5 are formed with long and short sides 8 and 9, respectively. Due to` this peculiar formation of the folding gears, the successive folds or laminations l0 which pass through guide 6 are alternately long and short. This causes the laminations to assume a recumbent position. As the laminations are forced through the guide and are arranged annularly in receptacle 1, they are compressed and take a desired recumbent position.

After the laminations are thus arranged annularly side by side, they are subjected to a cornpressing and molding operation which is described in detail in the said co-pending applilcation The receptacle 1 preferably has associated therewith an arbor press orA like device (not shown) which may be used in the subsequent compressing and molding operation as described in the co-pending application. Since the present invention is not concerned with` the final step of compressing and molding the laminated body, it is unnecessary to describe further this operation.

In Figure 3, there is illustrated a practical machine for carrying out the desired purpose.

This machine comprises a supporting framey shown at 3a. A pair of folding wheels 5a coro respond to `gears 5 of Figure 2 and are adapted to form successive uneven folds in the strip material I2. The Working surfaces of wheels 51a are provided with alternate projections and depressions l3'and I 4, respectively, which are unevenly spaced so as to form alternative long and short folds or lamnations in the strip material. Wheels 5a are driven at the desiredconstant speed by means of intermeshed gears l5, which,

in turn, are driven from a suitable pulley wheel I6 connected to a driving source (not sho-Wn).

A pair of pusher Wheels l1 are arranged for cooperation with each other to push the successive folds or laminations of the strip material through guide 6a. These wheels are provided With intermeshing teeth I8, which move in slots provided in guide 6a, as illustrated. 'I'he pusher Wheels are preferably connected by means of chains I9 to Wheels 5a and gears l5 so as to be driven thereby.

In operation, the successive folds or laminations are pushed along guide 6a and assume a slightly recumbent position due to the uneven folding of the strip, as above mentioned. The laminations pass into receptacle 1a. and are annularly arranged therein as above described. It Will be noted that in .this illustration, the uneven folding of the strip and the slightly recumbent positions of the laminations are less pronounced than in the illustration of Figure 2, it being remembered that Figure 2 is a diagrammatic illustration and is somewhat exaggerated to illustrate more clearly the general principlesv of the apparatus.

After the desired laminated annular body or rim has been formed, it is axially compressed by means of the arbor press Eil, as above mentioned. The compressed rim is then assembled with any suitable gear Web and subjected to the heating and molding process; after which the gear teeth are cut or machined, as fully described in the co-pending application.

Although the apparatus has been described With particular reference to the formation of helical gears, it will be understood that the invention is not thus limited but is directed to the formation of any body in Which laminations are adjaoently arranged in an annulus. The laminations may bei disposed at an angle, as herein described, or they may be vertically arranged depending upon the particular article being formed. Although a specific practical form of the apparatus has been disclosed and described herein for the purpose of illustration, it is to be understood that various modifications and changes may be made Without departing from the invention.

I claim:

1. Apparatus for forming a non-metallic rim portion of a gear, comprising means for forming laminations of fibrous sheet material and an associated binder, and means for arranging said laminations side by side in an annulus With the laminations extending from one face of the annulus to the opposite face thereof.

2. Apparatus for forming a non-metallic rim portion of a gear, comprising means for folding a strip of brous sheet material and an associated binder to form laminations, and means ,for arranging said laminations side by side in an annulus with the laminations extending from one face of the annulus to the opposite face thereof.

3. Apparatus for forming a non-metallic rim portion of a gear, comprising an annular receptacle, a guide extending tangentially from said receptacle, meansv for forming laminations of fibrous sheet material and an associated binder,

' and means for positioning and moving said laminationsu side by side in said guide to arrange said laminations annularly in said receptacle. 4. Apparatus for forming a non-metallic rim portion of a gear, comprising an annular receptacle, a guide extending tangentially from said receptacle, means for folding a strip of brous sheet material and an associated binder to form laminations, and means for positioning and moving said laminations side by side in said guide to arrange saidv laminations annularly in said receptacle.

5. Apparatus for forming a non-metallic rim portion of a gear, comprising an annular recep- 10 tacle, a guide extending tangentially from said receptacle, means for folding a strip of fibrous sheet material and an associated binder unevenly to form laminations, and means for positioning and moving said laminations side by side in said guide to arrange said laminations annularly -in said receptacle, the uneven folds causing the laminations to assume a recumbent position.

6. Apparatus for forming a non-metallic rim portion of a gear, comprising an annular receptacle, a guide extending tangentially from said receptacle, a pair of Wheels adapted to fold a strip of fibrous sheetmaterial and an associated binder to form laminations, and a pair of toothed Wheels for positioning and moving said laminations side by side in said guide to arrange said laminations annularly in said receptacle.

7.*Apparatus for forming a non-metallic rim portion of a gear, comprising an annular recep- 3o tacle, a guide extending tangentially from said receptacle, a pair of Wheels adapted to fold a strip of fibrous sheet material and an associated binder unevenly to form laminations, and a pair of toothed Wheels for positioning and moving said laminations side by side in said guide to arrange said laminations annularly in said receptacle, the uneven folds causing the laminations to assume a recumbent position.

8. Apparatus for forming a non-metallic rim 4.0 portion of a gear, comprising means for forming laminations of fibrous sheet material andan associated binder, and means for arranging said laminations recumbently side by side in an annulus with the laminations extending from one face of the annulus to the opposite face thereof.

9. Apparatus for forming a non-metallic rim portion of a gear, comprising means for forming laminations of fibrous sheet material and an associated binder, and means for arranging said laminations side by side in an annulus With the laminations lying in planes extending transversely between the opposite faces of the annulus.

l0. Apparatus for forming a non-metallic rim portion of a gear, comprising means for folding a strip of fibrous sheet material and an associated binder unevenly to form laminations, and means for arranging said laminations side by side in an annulus with the laminations extending from one face of the annulus to the opposite face thereof, the uneven folds causing the laminations to assume a recumbent position.

11. Apparatus for forming a non-metallic rim 05 portion of a gear, comprising means for forming laminations of fibrous sheet material and an associated binder, means for arranging said laminations side by side in an annulus with the laminations extending from one face of the annulus to the opposite face thereof, and means for compressing the annulus axially.

EMILE MERLE DAUBIGNE. 

